refactored a couple of things based on feedback

app/controllers/projects/cycle_analytics_controller.rb

@@ -6,7 +6,7 @@ class Projects::CycleAnalyticsController < Projects::ApplicationController
   before_action :authorize_read_cycle_analytics!
 
   def show
-    @cycle_analytics = ::CycleAnalytics.new(@project, from: start_date(cycle_analytics_params), user: current_user)
+    @cycle_analytics = ::CycleAnalytics.new(@project, from: start_date(cycle_analytics_params))
 
     respond_to do |format|
       format.html
@@ -55,7 +55,7 @@ class Projects::CycleAnalyticsController < Projects::ApplicationController
     {
       summary: summary,
       stats: stats,
-      permissions: @cycle_analytics.permissions
+      permissions: @cycle_analytics.permissions(user: current_user)
     }
   end
 end

app/models/cycle_analytics.rb

@@ -1,10 +1,9 @@
 class CycleAnalytics
   STAGES = %i[issue plan code test review staging production].freeze
 
-  def initialize(project, from:, user:)
+  def initialize(project, from:)
     @project = project
     @from = from
-    @user = user
     @fetcher = Gitlab::CycleAnalytics::MetricsFetcher.new(project: project, from: from, branch: nil)
   end
 
@@ -12,8 +11,8 @@ class CycleAnalytics
     @summary ||= Summary.new(@project, from: @from)
   end
 
-  def permissions
+  def permissions(user:)
-    Gitlab::CycleAnalytics::Permissions.get(user: @user, project: @project)
+    Gitlab::CycleAnalytics::Permissions.get(user: user, project: @project)
   end
 
   def issue

lib/gitlab/cycle_analytics/permissions.rb

@@ -2,9 +2,12 @@ module Gitlab
   module CycleAnalytics
     class Permissions
       STAGE_PERMISSIONS = {
-        read_build: [:test, :staging],
+        issue: :read_issue,
-        read_issue: [:issue, :production],
+        code: :read_merge_request,
-        read_merge_request: [:code, :review]
+        test: :read_build,
+        review: :read_merge_request,
+        staging: :read_build,
+        production: :read_issue,
       }.freeze
 
       def self.get(*args)
@@ -30,15 +33,7 @@ module Gitlab
       def authorized_stage?(stage)
         return false unless authorize_project(:read_cycle_analytics)
 
-        permissions_for_stage(stage).keys.each do |permission|
+        STAGE_PERMISSIONS[stage] ? authorize_project(STAGE_PERMISSIONS[stage]) : true
-          return false unless authorize_project(permission)
-        end
-
-        true
-      end
-
-      def permissions_for_stage(stage)
-        STAGE_PERMISSIONS.select { |_permission, stages| stages.include?(stage) }
       end
 
       def authorize_project(permission)

spec/models/cycle_analytics/code_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#code', feature: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   context 'with deployment' do
     generate_cycle_analytics_spec(

spec/models/cycle_analytics/issue_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#issue', models: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   generate_cycle_analytics_spec(
     phase: :issue,

spec/models/cycle_analytics/plan_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#plan', feature: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   generate_cycle_analytics_spec(
     phase: :plan,

spec/models/cycle_analytics/production_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#production', feature: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   generate_cycle_analytics_spec(
     phase: :production,

spec/models/cycle_analytics/review_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#review', feature: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   generate_cycle_analytics_spec(
     phase: :review,

spec/models/cycle_analytics/staging_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#staging', feature: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   generate_cycle_analytics_spec(
     phase: :staging,

spec/models/cycle_analytics/test_spec.rb

@@ -6,7 +6,7 @@ describe 'CycleAnalytics#test', feature: true do
   let(:project) { create(:project) }
   let(:from_date) { 10.days.ago }
   let(:user) { create(:user, :admin) }
-  subject { CycleAnalytics.new(project, from: from_date, user: user) }
+  subject { CycleAnalytics.new(project, from: from_date) }
 
   generate_cycle_analytics_spec(
     phase: :test,